/**
* Perform an OAuth request - these differ somewhat from regular API calls
* @internal
*/
public function oauth_exchange($endpoint, array $args)
{
// build a post request and authenticate via OAuth header
$params = new TwitterOAuthParams($args);
$params->set_consumer($this->Consumer);
if ($this->AccessToken) {
$params->set_token($this->AccessToken);
}
$params->sign_hmac('POST', $endpoint);
$conf = array('method' => 'POST', 'redirection' => 0, 'headers' => array('Authorization' => $params->oauth_header()));
$http = self::http_request($endpoint, $conf);
$body = trim($http['body']);
$stat = $http['response']['code'];
if (200 !== $stat) {
throw new TwitterApiException($body, -1, $stat);
}
parse_str($body, $params);
if (!is_array($params) || !isset($params['oauth_token']) || !isset($params['oauth_token_secret'])) {
throw new TwitterApiException(__('Malformed response from Twitter', 'twitter-api'), -1, $stat);
}
return $params;
}
/**
* Sign and execute REST API call
* @return array
*/
private function rest_request($path, array $args, $http_method)
{
// all calls must be authenticated in API 1.1
if (!$this->has_auth()) {
throw new TwitterApiException('Twitter client not authenticated', 0, 401);
}
// prepare HTTP request config
$conf = array('method' => $http_method);
// build signed URL and request parameters
$endpoint = TWITTER_API_BASE . '/' . $path . '.json';
$params = new TwitterOAuthParams($args);
$params->set_consumer($this->Consumer);
$params->set_token($this->AccessToken);
$params->sign_hmac($http_method, $endpoint);
if ('GET' === $http_method) {
$endpoint .= '?' . $params->serialize();
} else {
$conf['body'] = $params->serialize();
}
$http = self::http_request($endpoint, $conf);
// remember current rate limits for this endpoint
$this->last_call = $path;
if (isset($http['headers']['x-rate-limit-limit'])) {
$this->last_rate[$path] = array('limit' => (int) $http['headers']['x-rate-limit-limit'], 'remaining' => (int) $http['headers']['x-rate-limit-remaining'], 'reset' => (int) $http['headers']['x-rate-limit-reset']);
}
return $http;
}
